Table 2.

Dimensionless parameters for the pulmonary system and the experimental models

Dimensionless Parameter Description Normal Lung (atgeneration 16) Experiments
Embedded Image Undisturbed film thickness 0.02–0.04 0.12–0.36
Embedded Image Effective Bond number 0.3 (for ε = 0.15)10−3–3 × 10−2
Embedded Image Viscosity ratio 10−2 10−3–7 × 10−2
Embedded Image Effective Reynolds number for film fluid10−6–10−3 10−8–10−4
Embedded Image Effective Reynolds number for core fluid10−9–10−4 10−5–5 × 10−2
Embedded Image Solubility parameter 106–107 106
Embedded Image Surface diffusivity 10−3–10−1 10−4–10−2